Tenacity
Brittle
-
Solubility
Poorly soluble in dilute HCl
-
Durability
-
-
Specific Gravity
2.80-2.952.25-2.40
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Perfect on {10 1 1}, rhombohedral cleavage
perfect on {010}; good on {100}
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references